ねじ下穴ドリル径表 ユニファイねじ
ねじ下穴ドリル径表
●ユニファイねじ| ねじの呼び | ドリル径 | 最小寸法 | 最大寸法 |
| No.0‐80UNF | 1.25 | 1.182 | 1.305 |
| No.1‐64UNC | 1.55 | 1.425 | 1.582 |
| No.1‐72UNF | 1.55 | 1.474 | 1.612 |
| No.2‐56UNC | 1.8 | 1.695 | 1.871 |
| No.2‐64UNF | 1.85 | 1.756 | 1.912 |
| No.3‐48UNC | 2.1 | 1.941 | 2.146 |
| No.3‐56UNF | 2.1 | 2.025 | 2.197 |
| No.4‐40UNC | 2.3 | 2.157 | 2.385 |
| No.4‐48UNF | 2.4 | 2.271 | 2.458 |
| No.5‐40UNC | 2.6 | 2.487 | 2.697 |
| No.5‐44UNF | 2.7 | 2.551 | 2.74 |
| No.6‐32UNC | 2.8 | 2.642 | 2.895 |
| No.6‐40UNF | 2.9 | 2.82 | 3.022 |
| No.8‐32UNC | 3.4 | 3.302 | 3.53 |
| No.8‐36UNF | 3.5 | 3.404 | 3.606 |
| No.10‐24UNC | 3.9 | 3.683 | 3.962 |
| No.10‐32UNF | 4.1 | 3.963 | 4.165 |
| No.12‐24UNC | 4.5 | 4.344 | 4.597 |
| No.12‐28UNF | 4.6 | 4.496 | 4.724 |
| No.12‐32UNEF | 4.7 | 4.623 | 4.826 |
| 1/4‐20UNC | 5.1 | 4.979 | 5.257 |
| 1/4‐28UNF | 5.5 | 5.36 | 5.588 |
| 1/4‐32UNEF | 5.6 | 5.487 | 5.689 |
| 5/16‐18UNC | 6.6 | 6.401 | 6.731 |
| 5/16‐24UNF | 6.9 | 6.782 | 7.035 |
| 5/16‐32UNEF | 7.1 | 7.087 | 7.264 |
| 3/8‐16UNC | 8 | 7.798 | 8.153 |
| 3/8‐24UNF | 8.5 | 8.382 | 8.636 |
| 3/8‐32UNEF | 8.7 | 8.662 | 8.864 |
| 7/16‐14UNC | 9.4 | 9.144 | 9.55 |
| 7/16‐20UNF | 9.9 | 9.729 | 10.033 |
| 7/16‐24UNS | 10.1 | 9.957 | 10.21 |
| 7/16‐28UNEF | 10.2 | 10.135 | 10.337 |
| 1/2‐13UNC | 10.9 | 10.592 | 11.023 |
| 1/2‐20UNF | 11.5 | 11.329 | 11.607 |
| 1/2‐24UNS | 11.7 | 11.557 | 11.811 |
| 1/2‐28UNEF | 11.8 | 11.71 | 11.938 |
| 1/2‐32UN | 11.9 | 11.837 | 12.039 |
| 9/16‐12UNC | 12.2 | 11.989 | 12.446 |
| 9/16‐18UNF | 12.9 | 12.751 | 13.081 |
| 9/16‐20UN | 13 | 12.904 | 13.208 |
| 9/16‐24UNEF | 13.2 | 13.132 | 13.385 |
| 5/8‐11UNC | 13.6 | 13.386 | 13.868 |
| 5/8‐18UNF | 14.5 | 14.351 | 14.681 |
| 5/8‐20UN | 14.6 | 14.504 | 14.782 |
| 5/8‐24UNEF | 14.8 | 14.732 | 14.986 |
| 3/4‐10UNC | 16.6 | 16.307 | 16.84 |
| 3/4‐16UNF | 17.5 | 17.323 | 17.678 |
| 3/4‐20UNEF | 17.8 | 17.679 | 17.957 |
| 7/8‐9UNC | 19.6 | 19.177 | 19.761 |
| 7/8‐14UNF | 20.5 | 20.27 | 20.675 |
| 7/8‐20UNEF | 21 | 20.854 | 21.132 |
| 1"‐8UNC | 22.3 | 21.971 | 22.606 |
| 1"‐12UNF | 23.3 | 23.114 | 23.571 |
| 1"‐14UNS | 23.6 | 23.445 | 23.825 |
| 1"‐20UNEF | 24.1 | 24.029 | 24.307 |
| 1"1/16‐12UN | 24.9 | 24.689 | 25.146 |
| 1"1/8‐7UNC | 25 | 24.638 | 25.349 |
| 1"1/8‐8UN | 25.5 | 25.146 | 25.781 |
| 1"1/8‐12UNF | 26.5 | 26.289 | 26.746 |
| 1"1/8‐18UNEF | 27.2 | 27.051 | 27.381 |
| 1"3/16‐12UN | 28 | 27.864 | 28.321 |
| 1"1/4‐7UNC | 28.2 | 27.813 | 28.524 |
| 1"1/4‐8UN | 28.6 | 28.321 | 28.956 |
| 1"1/4‐12UNF | 29.6 | 29.464 | 29.921 |
| 1"1/4‐18UNEF | 30.3 | 30.226 | 30.556 |
| 1"5/16‐12UN | 31.2 | 31.039 | 31.496 |
| 1"3/8‐6UNC | 30.8 | 30.353 | 31.115 |
| 1"3/8‐8UN | 31.8 | 31.496 | 32.131 |
| 1"3/8‐12UNF | 32.8 | 32.639 | 33.096 |
| 1"3/8‐18UNEF | 33.5 | 33.401 | 33.731 |
| 1"1/2‐6UNC | 34 | 33.528 | 34.29 |
| 1"1/2‐8UN | 35 | 34.671 | 35.306 |
| 1"1/2‐12UNF | 36 | 35.814 | 36.271 |
| 1"1/2‐18UNEF | 36.6 | 36.576 | 36.88 |
| 1"5/8‐8UN | 38.1 | 37.846 | 38.481 |
| 1"5/8‐12UNF | 39.1 | 38.989 | 39.446 |
| 1"5/8‐18UNEF | 39.8 | 39.751 | 40.081 |
| 1"3/4‐5UNC | 39.5 | 38.964 | 39.827 |
| 1"3/4‐8UN | 41.3 | 41.021 | 41.656 |
| 1"3/4‐12UN | 42.3 | 42.164 | 42.621 |
| 1"7/8‐8UN | 44.5 | 44.196 | 44.831 |
| 1"7/8‐12UN | 45.4 | 45.339 | 45.796 |
| 2"‐41/2UNC | 45.2 | 44.679 | 45.593 |
| 2"‐8UN | 47.8 | 47.371 | 48.006 |
| 2"‐12UN | 48.6 | 48.514 | 48.971 |
| 2"1/4‐8UN | 54 | 53.721 | 54.356 |
| 2"1/2‐8UN | 60.3 | 60.071 | 60.706 |
| 2"3/4‐8UN | 66.6 | 66.421 | 67.056 |
| 3"‐8UN | 73 | 72.771 | 73.406 |
タップ下穴 ｜
